Mescalero or Mescalero Apache is an Apache tribe of Southern Athabaskan Native Americans. The tribe is federally recognized as the Mescalero Apache Tribe of the Mescalero Apache Reservation, located in south central New Mexico.

Based on this passage, where have the mescalero apache settled in new mexico? Let's give stream of consciousness first:
The relevant sentence in the passage is: The tribe is federally recognized as the Mescalero Apache Tribe of the Mescalero Apache Reservation, located in south central New Mexico.
So, the final answer is the Mescalero Apache Reservation , located in south central New Mexico.